Steam packing device



1 (No Model.) I x W; PIDLER.

V STEAM PAUKING DEVICE.

No. 276,379. Patented-APLZ L, 1883.

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UNllTlED STATES PATENT Enron,

WVILLIAM FIDLER, OF TOPEKA, KANSAS.

STEAlVl PACKING DEVICE.

SPECIFICATION forming parti of Letters Patent No. 276,379, dated April 24, 1883.

Application filed January 22, 1883. No model.)

I i To all whom 'l-t may concern i Be it known that I, WILLIAM FIDLER, a citizen of the United States, residing at T0- peka, in the county of Shawnee and State of Kansas, have invented certain new and useful Improvements in Steam Packing Devices, of which the following is a specification, reference being bad therein to the accompanying drawings.

My invention relates to certain new and useful improvements in rod-packing for valvestems, piston-rods, pump-rods,&c. and it con sists in forming a stuffing-box or collarpacking of metal, and in a suitable form to encircle the valve-stem or piston-rod of a steam-engine or water-engine, or a pump-rod or similar devices for pumps, and byits construction use the expanding steam to aid in forming a tight packing around the pistorrrod or valvestem, and also the same use of'water in pumps when compressedbythe action of the plunger.

The object of my invention is to construct a packingbox that can be used without coiled springs, metal rings, or fibrous material, and will allow of the use of steam or 'fl'uid in connection with its application and use.

Similar letters of reference refer to similar parts throughout the drawings.

Referring to the drawings, Figure 1 is a longitudinal sectional view of cylinderand stuffing-box joined, showing piston-head in cylinder and rod passingthrough stuffing-box bolted in cylinder-head. Fig. 2 is a perspective view of my device, partly in section, showing the openings for the inlet of steam or fluid.

In the drawings, A represents a stuffing-box or rod-packing box, formed of metal, (preferably cast,) with aright-angular projecting flange, a, extending outward from thetop of the same, and having perforations near its outer edge for the reception of bolts, by which it is attached to the front head of a cylinder.

From the under face of flange a" extends a rim or collar, a,- of suitable width and thickness, and terminating on its lowgei; edge in a square shoulder, c, and forming with the flange a the upper part of the outside casing of said stuffing-box. A cone-shaped extension,b,connecting at the base or inner edge of shoulder c,extends downward of sufficient length, or a distance about two-thirds the entire length of thestufling-box. Thiscone-shaped extensionis pierced with a series of elongated slots, 9 y g, the upper curved edge of said slots being near the inner edge of shoulder a. The lower edge of conebis curved inward and formed with a tapering edge, 71, leaving an aperturethrough which the piston-rod D will loosely pass. Gone I) is formed hollow and with walls of proper thickness for durability and strength. A hollow cylinder, b, is formed with straight inner walls of sufficient diameter to permit a valverod or piston-rod to pass loosely inside of the same, the outer walls of said cylinder being formedof the proper size and form to fit tightly inside the collar or rim a and projecting flange a. The outer end of said cylinder terminates in a circular projecting flange, c, perforated to receive binding-screwsd. Flange a is formed on its upper surface with a circular recess of the proper size to receive flange 0. Screwthreaded perforations are formed at the bottom of said recess to receive the binding-screw bolts d.

The lower end of cylinder b is extended to near the inner edge of cone b, terminating in a rounded outer end, 2', leaving the inner walls of the same straight. A narrow annular space is provided between the end of cylinder b and the inner face of curve lb of cone b. Said cylinder b formsthe gland proper, and the space between the walls of said gland and the walls of the couch receives steam or water from cylinder B, and by the peculiar formation and arrangement of the parts of said stuffing-box the steam or water received within the space between the walls of the same is forced by expansion through the openings into the conical chamber and into the annular space between the curved edge h of cone 1; and the end aof cylinder b, and impinges sharply against the piston-rod, thus forming a perfect and durable packing by meeting and resisting the volume of steam that otherwise might escape through the limited annular space between the gland and the rod. I

Fig. 1 shows the usual form and manner of attaching my improved stuffing-box to the front head of a steam-cylinder, B. The front head, I, is formed with a central outward extension, p. Said extension is formed hollow and of the same diameter its entire length, said diameter being the same as the diameter of cone b at the inner edge of shoulder 0. The outer end of extension 1) is turned outward to form flanges, having perforations to correspond with the perforations in flange a, through which bolts 1) pass, and by which said stufiingbox is held in place.

In attaching the stuffing-box to the front head, Z, the small or tapered end of cone 1) is inserted in the outer end of extension 1) until the shoulder 0 rests on the upper surface of said extension, when the bolts 19 are inserted through the perforations in the flanges, and nuts 0 applied to their outer ends and turned down, thus binding the parts together and holding the stufling-box in place.

The operation is as follows: Steam is let in at port a of the cylinder B, filling the cylinder abovethepiston-head,and,tollowingtheconrse marked by the curved arrows, enters the elongated slots garound cone 1), filling the enlarged space between the walls of said cone and the cylinder I), whence it returns within said walls to and out of the annular space between the points i and it, formed by the cone 1) and the cylinder 1), impinging on the pistonrod D, and forming a strong expansive pressure that effectively prevents the passage of steam through the gland or cylinder 1), and also lubricates the piston-rod.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-- 1. A stuffing-box consisting of an outerand inner cylinder, the outer cylinder formed with perforations for the admission of steam or fluid, the two cylinders forming an annular space at their free ends, through which steam passing impinges against the pistonmod substantially as and for the purpose set forth.

2. A stuffing-box having an outer hollow case formed with a flanged top, having a rim or collar extending from its under face, said rim having a shoulder on-its lower edge and cone shaped perforated section extending therefrom, said section terminating in an inwardly-curved edge, substantially as and for the purpose setforth.

3. A stufling-hox having an outer case and an inner cylinder, the outer case formed with a flanged top and under collar, a perforated cone-shaped extending section having its end inwardly curved, the inner cylinder formed with a top projecting flange adapted to rest; on the flange of the outer casing, said cylinder extending nearly to theinner face of the curved end of the outer ease, substantially-as and for the purpose set forth.

4. The combination of the perforated coneshaped section 1), formed as described, and having collar a and flanged top a, the inner cylinder, 1), formed as described, with the steam-cylinder B, front head, l, rods or bolts 1), and piston-rod D, substantially as shown and specified.

In testimony whereofI affix my signature in presence of two witnesses.

\VILLIAM FIDLER.

Witnesses JOHN HERVEY, FRANK FERRIN. 

